THE NAUTILUS. Vll 



Rumina decollata in Mobile and New Orleans . 4 



Septa Perry, Note on the genus. 



Snail trap ... .60 



Solenaia (Mycetopus) rugatus Sowerby . 142 



Sonorella argus Edson, n. sp. . . . 37 



Sonorella coloradoensis Steam . . 30 



Spain, Notes on the Molluscan fauna of the Sierra Elvira . 25 

 Sphaeriidae old and new . . 6, 95, 117 



Sphaerium acuminatum Prime. . . 139 



Sphaerium occidcntale Prime . . .64 



Sphaerium ohioense Sterki, n. sp. . .139 



Sphyradium, American species of . 60 



Spondylus americanus Hermann (1781) ecbinatu? Mart. 



(1784). . . 46 



Strange names for old acquaintances. . . 45 



Strombus columba Lam. . . 79 



Taylor, D.D., George W. (obituary) . . 82 



Terebra clarkei Smith, n. sp. (PI. IV, fig. 18,. . 75 



Thysanophora cockerellte Pils. , n. sp. (PI. I, figs. 5, 6) . 12 

 Trapezoideus rnisellus Morelet . . ... 141 



Trivia eos Roberts, n. sp. (PL VII, figs. 10, 11) . 99 



Trochetella stellata Pory . .... Ill 



Turbo canaliculatus Herm. T. spenglerianus Gmel. . 46 

 Unio (Lampsilis?) purpuriatus Say (PI. Ill, figs. 4, 5) . 22 

 Unio (Nodularia) putzeysi Preston, n. n. for N. subnigra 



Preston . .70 



Unio (Obovaria) jacksonianus Frier., n. sp. (PL III, figs. 



1, 2, 3. . 23 



Unio silongweensis, n. n. for N. vicinus Preston not Lea . 35 

 Unionidae, A criticism of Dr. Haas' monograph . . 141 

 Urocoptis acicularis Torre, n. sp. (PL VI, fig. 6) . .68 

 Urocoptis bacillaris Torre, n. sp. (PL VI, figs. 7, 8). . 57 

 Urocoptis bacillaris exilis Torre, n. var. (PL VI, fig. 10) . 58 

 Urocoptis bacillaris albicostulata Torre, n. subsp. (PL VI, 



tig. 9). . . . . .66 



Urocoptis bacillaris sordidula Torre, n. subsp. (PL VI, fig. 



11) .. . .66 



Urocoptis boqueronis Torre, n. sp. (PL VI, figs. 1, 2, 3) . 67 

 Urocoptis camagueyana Torre, n. sp. (PL VI, figs. 12, 13) 68 

 Urocoptis canteroiana Arango (PL VIII, figs. 4, 5) . . 126 

 Urocoptis cara Pils. & Hend., n. sp. (PL VI, figs. 27- 



30) . . 110, 128 



Urocoptis cienfuegosensis Pils., n. sp. (PL VIII, figs. 6, 



7, 8) .127 



Urocoptis cinerea Pfr. (PL VI, figs. 14, 15) . . .55 

 Urocoptis (Cochlodinella) mediana Pils., n. sp. (PL VIII, 



figs. 1, 2, 3) 126 



Urocoptis fortiuscula Torre, n. sp. (PL VI, figs. 24, 25, 26) 57 

 Urocoptis hidalgoi cabrasensis Pils. & Hend., n. var. (PL 



VIII, fig. 16) .... . 110 



